Structure-heating device.



PATENTED DEC. 18, 1906.

D. W. KRBLLWTTZ. STRUCTURE HEATING DEVICE.

APPLICATION FILED 11111.12. 1906.

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DIEDRICH W'ILLIAM KRELINVITZ, OF TORONTO, ONTARIO, CANADA.

STRUCTURE-HEATING DEVICE.

Specification of Letters Patent.

Iatented Dec. 18, 1996.

Application filed January l2, 190,6. Serial No. 295,818.

To all, whom, '/t NM1/y concern:

Be it known that I, DIEDRICH VILLIAM KRELLWITZ, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Structure-Heating Devices, of which the following is a specification.

My invention relates to improvements in steam-heaters particularly adapted for the heating of concrete structures during frosty weather; and the object of the invention is to devise a heating device for structures built of concrete and other material liable to be deleteriously affected by frost previous to 'linal setting, which will allow of such material getting its proper 'final set, and thereby insure, in frosty weather, of this class of work being done with as good results as in warmer weather, and it consists, essentially, of the features hereinafter more particularly explained.

Figure l is a perspective view of my improved structure-heating device, showing it broken away and in section and surrounding a column of concrete likewise broken away and in section. Fig. 2 is an enlarged perspective detail of a flat radiator-section adapted for covering floors, walls, or ceilings. Fig. 3 is a vertical section through one of the parabolic compartments. Fig. 4 is a vertical section midway between the parabolic compartments.

In Fig. l, 2 is a concrete column located in the form and in course of setting. A is a section which is arc-shaped, and comprises an inner wall A', an outer wall A2, and a heatnon-conducting wall A3, of asbestos or any other suitable heat-non-conducting material. The walls A, A2, and A3 are suitably secured together at the edges, and the outer and inner walls A and A2 are formed of vertically-disposed parabolic outwardly-extending cavities A4, which form recesses A5, which communicate with each other through the slightly-separated portions A6 and AA of the walls A and A2, respectively. The portions A8 and A7 are held apart by the separatingwashers B, through which and the walls A and A2 the rivets B extend. It will thus be seen that communication is established between the cavities or compartments.

It will be noticed that each section has two edges made in the form of a tongue C, and two edges made in the form of a jaw O, which form a groove into which the tongue of the adjacent section nts. Both the tongue and jaw are provided with registering holes,

through which are inserted drift-pins D, and

by this means all the sections may be secured together, as indicated in Fig. l, Where they are set up in circular form to surround the column 2, or, as indicated in Fig. 2, where the sections are represented as in flat form.

The drift-pins D are preferably tapered, so that they may be readily knocked out when it is desired `to separate the sections. This readily-detachable means of connecting the sections is, it will be readily recognized, very important, for the reason that where columns are set up it is necessary, after they are dried, to remove the heating device, so that it may be set around another column which requires drying. I provide hollow bosses E and F at the top and bottom, respectively, of each section, to which are connected a suitable hose attached to a suitable source of supply of steam for heating the sections.

In Fig. 2 I show reinforcing strips A8, which are fastened to the outside of the portions A, being designed to have the rivets extend through the same and allow of the bending of the sections into arc-shaped form outside the points of connection of the rivetsA to the walls, and thereby prevent anydanger of the rivets being withdrawn out of the walls and consequent leaking. The asbestos or non-conducting covering hereinbefore described serves to confine the heat within the heating device, and therefore effect a rapid drying and setting of the column. In Fig. 2 the section is shown flat, and it will be understood that I may connect several flat sections together, so as to cover floors, Walls, or ceilings temporarily during the period that the cement or concrete is setting. Such sections would be of course supported by any suitable means, which it is not necessary here to describe.

That I claim as my invention is- A heating device for concrete or other structures comprising a plurality of independent radiating sections, each provided on one side with a non-conductor of heat and formed with an inlet and an outlet for the heating agent, and means for detachably securing said sections together whereby the extent of the radiating-surface may be varied.

DIEDRICH WILLIAM KRELLWITZ.

Witnesses:

B. BOYD, E. INICEACHERN.

IOC 

